Hi Ryan,
I see your dilemma! Given the situation it sounds like you're doing an incredible job to make it all come together in one sense or another
Given that you're limited with the mount and f/10 exposure lengths, guiding probably isn't worth it at this stage. I think someone else has already mentioned narrowband imaging, which is always an option further down the track, if you can't get away to a dark site.
I currently image with an unmodified DSLR and exposures are generally 3mins at ISO 1600. I typically take 25 images and stack them together. I've never done anything with a total integration time longer than 2 hours. I know I really should drop the ISO to 800 and take more subs to get a cleaner image, however, at the moment I'm a tad impatient and just want to "see everything". After I've finished doing that I'll go back and actually dedicate the appropriate time to each target.
Cheers, Evan